What can I use to control snails on edible crops?
For immediate effect the best way to kill slugs and snails would be to water plants and soil with a liqiud pesticide designed to kill slugs and snails.
Slugs and Snails passing over treated soil or foliage, or feeding on the plants, are then killed off.
The ideal conditions for treatment would be a mild, damp evening when a good sunny day is forecast to follow.
Wait at least 10 days between treatment and harvesting edible crops.